This component tracks
* Modifying or removing existing builds, tests and other jobs
* Adding support for new types of jobs, builds or tests (e.g. opt, pgo, debug, ASAN or code coverage builds; b2g device builds, new test suites; special builds like spidermonkey or valgrind)
* Scheduler changes: what jobs get run and when

Created attachment 8493086[details][diff][review]
only use dmg formats on mac signing machines
We already disabled gpg/mar signing on v2 mac signing machines in passwords.py in bug 1062302, so this patch disables it on all of the instances + adjusts passwords.py for v1 mac.